1determine (the amount or number of something) mathematically:the program can calculate the number of words that will fit in the space available [with clause]:local authorities have calculated that full training would cost around £5,000 per teacher
determine by reasoning, experience, or common sense; reckon or judge:I was bright enough to calculate that she had been on vacation
[no object] (calculate on) include as an essential element in one’s plans.
2 (usually be calculated to do something) intend (an action) to have a particular effect:his last words were calculated to wound her
3 [with clause]US dialect suppose or believe:I calculate it’s pretty difficult to git edication down there